every time I alt+tab from a game I get the notification that my drivers have stopped working. any ideas on how to fix this?

I play a Game (not a rly heavy game) and I alt tab to change the background music, check fb or something. my screen goes black for a sec, shows the desktop and then goes black again for 2 secs and then I get the small notification that my AMD drivers have stopped working. its really annoying. how can I fix this? My system:Windows 7 (service pack 1) (64 bit)